surreptitious /sur-əp-tishˈəs/

1. Done by stealth or fraud
2. Stealthy

• manipulator
• manipulators
• manipulatory
• manis
• Manis
• manito
• manitou
• manitous
• mani wall
• man jack
• man-jack
• manjack
• man jacks
• man-jacks
• manjacks
• mayo
• Mayologist
• Mayology
• mayonnaise
• mayonnaises
• mayor
• mayoral
• mayoralties
• mayoralty
• mayoress